June 6, 2014 AT 6:55 pm
NEW PRODUCT – 3×4 Phone-style Matrix Keypad
NEW PRODUCT – 3×4 Phone-style Matrix Keypad
Hey, Jenny, I’ve got your number! And I’m going to dial 867-5309 into this very nice phone-style matrix keypad. This keypad has 12 buttons, arranged in a telephone-line 3×4 grid. It’s made of plastic with sturdy plastic buttons. The keys are connected to a matrix so you only need 7 microcontroller pins (3-columns and 4-rows) to scan through the pad.
There’s a great Matrix Keypad Arduino library that should work great with this item with minor adjustments. It’s basically a sturdier version of our Membrane 3×4 Matrix Keypad and comes with 7 header pins pre-soldered on for easy plugging. Starting from the left there are three column pins, and then to the right are the four row pins.
Check out all the Circuit Playground Episodes! Our new kid’s show and subscribe!
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — Lessons Learned Scaling Airbnb 100X
Wearables — Start with a sketch
Electronics — When do I use X10?
Biohacking — Book Recommendation: Autonomous by Annalee Newitz
No Comments
No comments yet.
Sorry, the comment form is closed at this time.